Add DefaultTemetry typealias in ClientRuntime

Author: jbelkins

Sources/ClientRuntime/Telemetry/DefaultTelemetry.swift

@@ -0,0 +1,12 @@
+//
+// Copyright Amazon.com Inc. or its affiliates.
+// All Rights Reserved.
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+import SmithyTelemetryAPI
+
+/// Typealias for backward compatibility.
+/// The actual implementation is now in SmithyTelemetryAPI.
+public typealias DefaultTelemetry = SmithyTelemetryAPI.DefaultTelemetry